A woman's reproductive experience: Long-term implications for chronic disease and death

Birthweight of the subsequent singleton pregnancy following a first twin or singleton pregnancy

Author(s): Prativa Basnet, Rolv Skjærven, Quaker E. Harmon, Allen J. Wilcox, Kari Klungsøyr, Linn Marie Sørbye, Nils‐Halvdan Morken, Liv G. Kvalvik
Published in: Acta Obstetricia et Gynecologica Scandinavica, Issue 102, 2025, Page(s) 1674-1681, ISSN 0001-6349
Publisher: Wiley-Blackwell
DOI: 10.1111/aogs.14644

Sex differences in parent–offspring recurrence of attention‐deficit/hyperactivity disorder

Author(s): Berit S. Solberg, Tor‐Arne Hegvik, Anne Halmøy, Rolv Skjærven, Anders Engeland, Jan Haavik, Kari Klungsøyr
Published in: Journal of Child Psychology and Psychiatry, 2020, ISSN 0021-9630
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/jcpp.13368

Cesarean delivery in Norwegian nulliparous women with singleton cephalic term births, 1967–2020: a population-based study

Author(s): Yeneabeba Tilahun Sima, Rolv Skjærven, Liv Grimstvedt Kvalvik, Nils-Halvdan Morken, Kari Klungsøyr, Linn Marie Sørbye
Published in: BMC Pregnancy and Childbirth, Issue 22, 2023, ISSN 1471-2393
Publisher: BioMed Central
DOI: 10.1186/s12884-022-04755-3

Interpregnancy weight change and recurrence of gestational diabetes mellitus: a population‐based cohort study

Author(s): LM Sorbye, S Cnattingius, R Skjaerven, K Klungsoyr, A‐K Wikström, LG Kvalvik, N‐H Morken
Published in: BJOG: An International Journal of Obstetrics & Gynaecology, Issue 127/13, 2020, Page(s) 1608-1616, ISSN 1470-0328
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/1471-0528.16364

‘Cross‐over’ risks of pregnancy: Are cardiovascular disease risk factors an underlying cause?

Author(s): Allen J. Wilcox, Rolv Skjaerven
Published in: Paediatric and Perinatal Epidemiology, Issue 36, 2023, Page(s) 824-826, ISSN 0269-5022
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/ppe.12899

Heterogeneity in the risk of cardiovascular disease mortality after the hypertensive disorders of pregnancy across mothers' lifetime reproductive history

Author(s): Sage Wyatt, Liv Grimstvedt Kvalvik, Aditi Singh, Kari Klungsøyr, Truls Østbye, Rolv Skjærven
Published in: Paediatric and Perinatal Epidemiology, Issue 38, 2024, Page(s) 230-237, ISSN 0269-5022
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/ppe.13059

Sex differences in parent–offspring recurrence of attention‐deficit/hyperactivity disorder

Author(s): Berit S. Solberg, Tor‐Arne Hegvik, Anne Halmøy, Rolv Skjærven, Anders Engeland, Jan Haavik, Kari Klungsøyr
Published in: Journal of Child Psychology and Psychiatry, Issue 62, 2025, Page(s) 1010-1018, ISSN 0021-9630
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/jcpp.13368

Term complications and subsequent risk of preterm birth: registry based study

Author(s): Liv G Kvalvik, Allen J Wilcox, Rolv Skjærven, Truls Østbye, Quaker E Harmon
Published in: BMJ, Issue 2020; 369:m1007, 2020, Page(s) m1007, ISSN 1756-1833
Publisher: British Medical Journal
DOI: 10.1136/bmj.m1007

Lipid levels after childbirth and association with number of children: A population-based cohort study

Author(s): Aleksandra Pirnat, Lisa A. DeRoo, Rolv Skjærven, Nils-Halvdan Morken
Published in: PLOS ONE, Issue 14/10, 2019, Page(s) e0223602, ISSN 1932-6203
Publisher: Public Library of Science
DOI: 10.1371/journal.pone.0223602

Pregnancy‐Associated Maternal Mortality Within One Year After Childbirth: Population‐Based Cohort Study

Author(s): Nadia Arshad, Rolv Skjærven, Kari Klungsøyr, Linn Marie Sørbye, Liv Grimstvedt Kvalvik, Nils‐Halvdan Morken
Published in: BJOG: An International Journal of Obstetrics & Gynaecology, Issue 132, 2025, Page(s) 365-374, ISSN 1470-0328
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/1471-0528.17985

Long‐term cardiovascular mortality in women with twin pregnancies by lifetime reproductive history

Author(s): Prativa Basnet, Rolv Skjærven, Linn Marie Sørbye, Nils‐Halvdan Morken, Kari Klungsøyr, Aditi Singh, Janne Mannseth, Quaker E. Harmon, Liv Grimstvedt Kvalvik
Published in: Paediatric and Perinatal Epidemiology, Issue 37, 2023, Page(s) 19-27, ISSN 0269-5022
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/ppe.12928

Harnessing women's full reproductive history in assessing cardiovascular risk

Author(s): Rolv Skjaerven, Liv G. Kvalvik
Published in: Paediatric and Perinatal Epidemiology, Issue 38, 2024, Page(s) 268-270, ISSN 0269-5022
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/ppe.13064

Pregnancy complications in last pregnancy and mothers’ long-term cardiovascular mortality: does the relation differ from that of complications in first pregnancy? A population-based study

Author(s): Abdu Kedir Seid, Nils-Halvdan Morken, Kari Klungsøyr, Liv Grimstvedt Kvalvik, Linn Marie Sorbye, Lars Johan Vatten, Rolv Skjærven
Published in: BMC Women's Health, Issue 23, 2023, ISSN 1472-6874
Publisher: BioMed Central
DOI: 10.1186/s12905-023-02503-z

Lipid levels after childbirth and association with number of children: A population-based cohort study

Author(s): Aleksandra Pirnat, Lisa A. DeRoo, Rolv Skjærven, Nils-Halvdan Morken
Published in: PLOS ONE, Issue 14, 2022, Page(s) e0223602, ISSN 1932-6203
Publisher: Public Library of Science
DOI: 10.1371/journal.pone.0223602

Pregnancy History at 40 Years of Age as a Marker of Cardiovascular Risk

Author(s): Liv G. Kvalvik, Rolv Skjærven, Gerhard Sulo, Aditi Singh, Quaker E. Harmon, Allen J. Wilcox
Published in: Journal of the American Heart Association, Issue 13, 2024, ISSN 2047-9980
Publisher: Wiley-Blackwell
DOI: 10.1161/jaha.123.030560

Interpregnancy weight change and recurrence of gestational diabetes mellitus: a population‐based cohort study

Author(s): LM Sorbye, S Cnattingius, R Skjaerven, K Klungsoyr, A‐K Wikström, LG Kvalvik, N‐H Morken
Published in: BJOG: An International Journal of Obstetrics & Gynaecology, Issue 127, 2023, Page(s) 1608-1616, ISSN 1470-0328
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/1471-0528.16364

The relationship between cesarean delivery and fecundability: a population-based cohort study

Author(s): Yeneabeba Tilahun Sima, Maria Christine Magnus, Liv Grimstvedt Kvalvik, Nils-Halvdan Morken, Kari Klungsøyr, Rolv Skjærven, Linn Marie Sørbye
Published in: American Journal of Obstetrics and Gynecology, Issue 230, 2024, Page(s) 667.e1-667.e21, ISSN 0002-9378
Publisher: Mosby Inc.
DOI: 10.1016/j.ajog.2023.10.029

Hypertensive Disorders of Pregnancy, Maternal Cardiovascular Disease Mortality and the role of Familial Predisposition: A Norwegian Population-Based Sibling-Comparison, Sibling-Spillover and Negative-Control Cohort Study

Author(s): Aditi Singh, Sage Wyatt, Liv Grimstvedt Kvalvik, Rolv Skjærven
Published in: American Journal of Epidemiology, 2025, ISSN 0002-9262
Publisher: Oxford University Press
DOI: 10.1093/aje/kwaf257

Risk of adverse pregnancy outcomes in twin‐ and singleton‐born women: An inter‐generational cohort study

Author(s): Prativa Basnet, Rolv Skjærven, Quaker E. Harmon, Linn Marie Sørbye, Nils‐Halvdan Morken, Aditi Singh, Kari Klungsøyr, Liv Grimstvedt Kvalvik
Published in: BJOG: An International Journal of Obstetrics & Gynaecology, Issue 131, 2024, Page(s) 750-758, ISSN 1470-0328
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/1471-0528.17690

Hypertensive Disorders of Pregnancy, Preterm Delivery, and Infant Size: Which Mothers Have Highest Cardiovascular Disease Mortality?

Author(s): Sage Wyatt, Rolv Skjærven, Lars Vatten, Allen J. Wilcox, Aditi Singh, Kari Klungsøyr, Suzan L. Carmichael, Nils‐Halvdan Morken, Rolv Terje Lie, Liv Grimstvedt Kvalvik
Published in: Paediatric and Perinatal Epidemiology, Issue 39, 2025, Page(s) 515-523, ISSN 0269-5022
Publisher: Blackwell Publishing Inc.
DOI: 10.1111/ppe.70033

Birth Weight in Consecutive Pregnancies and Maternal Cardiovascular Disease Mortality Among Spontaneous and Iatrogenic Term Births: A Population-Based Cohort Study

Author(s): Yeneabeba Tilahun Sima, Rolv Skjaerven, Liv Grimstvedt Kvalvik, Nils-Halvdan Morken, Kari Klungsøyr, Janne Mannseth, Linn Marie Sørbye
Published in: American Journal of Epidemiology, Issue 192, 2023, Page(s) 1326-1334, ISSN 0002-9262
Publisher: Oxford University Press
DOI: 10.1093/aje/kwad075

Endotypes of hypertensive disorders of pregnancy across lifetime reproductive history and cardiometabolic outcomes

Author(s): Sage Wyatt, Liv Kvalvik, Rolv Skjærven
Published in: 2025
Publisher: University of Bergen

Caesarean Delivery and Women’s Health: Population-Based Studies : Trends, Offspring Birthweight, Fecundability and Maternal Cardiovascular Disease Mortality

Author(s): Yeneabeba Sima, Liv Kvalvik, Linn Marie Sørbye, Rolv Skjærven
Published in: 2024
Publisher: University of Bergen

Twin Pregnancies: Long-term Maternal Mortality, Birthweight in Subsequent Pregnancy and Adverse Pregnancy Outcomes in Next Generation

Author(s): Prativa Basnet, Liv Kvalvik, Linn Marie Sørbye, Rolv Skjærven
Published in: 2024
Publisher: University of Bergen

Maternal Cardiovascular Disease Mortality Related to Adverse Pregnancy Outcomes in Successive Pregnancies: A National Cohort Study

Author(s): Aditi Singh, Suzan Carmichael, Sage Wyatt, Liv G Kvalvik, Linn Marie Sørbye, Allen Wilcox, Rolv Terje Lie, Rolv Skjærven
Published in: 2026
Publisher: - submitted to European Heart Journal

Cojoint association of first pregnancy gestational diabetes, hypertensive disorders of pregnancy and offspring birthweight on gestational diabetes and preeclampsia in subsequent pregnancy

Author(s): Linn Marie Sorbye, Roy Miodini Nilsen, Kari Klungsøyr, Nils-Halvdan Morken, Liv Grimstvedt Kvalvik, Ellen Aagaard Nøhr, Rolv Skjærven, Janet Catov
Published in: 2026
Publisher: - manuscript

Gestational diabetes mellitus in second pregnancy by adverse outcomes of first pregnancy: a population-based historical cohort study

Author(s): Linn Marie Sorbye, Roy Miodini Nilsen, Kari Klungsøyr, Nils-Halvdan Morken, Liv Grimstvedt Kvalvik, Ellen Aagaard Nøhr, Rolv Skjærven, Janet Catov
Published in: 2026
Publisher: - submitted to European Journal of Epidemiology

Patterns of Hypertensive Disorders of Prengancy and Gestational Diabetes Mellitus: A descriptive study aross lifetime reproductive history

Author(s): Sage Wyatt, Linn Marie Sørbye, Liv Kvalvik, Aditi Singh, Rolv Skjærven
Published in: 2026
Publisher: - submitted to Acta Obstetrica et Gynecological Scandinavia

Vaginal bleeding during pregnancy and risk of death from cardiovascular disease: a register-based study in a national cohort of Norwegian women

Author(s): Abdu Kedir Seid, Anna D. Laksafoss , Heather A. Boyd, Nils-Halvdan Morken, Linn Marie Sørbye, Rolv Skjærven
Published in: 2026
Publisher: - submitted

Maternal cardiovascular disease mortality following cesarean delivery: a population-based cohort

Author(s): Yeneabeba Sima, Liv Kvalvik, Suzan Carmichael, Rolv Skjærven, Aditi Singh, Linn Marie Sørbye
Published in: 2026
Publisher: - in manuscript

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